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Our Fire Alarm Bell has UL approval. If you need more information for our UL listed Bell, please search the

UL official website: www.ul.com choose "Certifications" and key in our UL File Number "S3565", our UL file will be found.

Or you can just directly link http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm

Our Detectors have certificates.